Spool



Oct. 22, 1929. r F. MOSSBERG SPOOL Filed Dec. 11. 1928 ll VIII/l4 I7 INVENTOR. /7/'a//% flasusae/ gz A TTORNEYS.

Patented as. 22, '1929 7 UNITED STATES PATENT OFFICE rnsnx KOSSBIBG, OF LIKE B030, MASSACHUSETTS, ASSIGNOB TO MOSSBERG PRESSED BTEEL CORPORATION, 01 ATTLEIZORO, MASSACHUSETTS, A. CORPORATION OF MASSA- SPOOL Application mes met-mm 11, 1928. Serial masters.

This invention relates to anim roved construction of metal spools, and as for its object to provide the heads of such spools, each with an integral portion extending inawardly from the plane of its inner face against which extensions the ends of the body portion abut and are joined thereto by an electro welding operation.

A further object of the invention is to form to a central opening thru the head with a portion of the stock at the edge of the hole turned inwardly forming a collar or flange portionof' a diameter corres onding to that of the body and against whlch the end of the body abuts and is connected by an electric welding operation.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully deac scribed, and particularly pointed out in the apended claims. a

it w the accompanying drawings:

Fig. 1 is a sectional view of one construction of my improved spool.

Fig. 2 is an end view showing the outer facemof a portion of one'of the heads of the spoo Fig. 3 shows the head with an inturned collar portion and the body portion being of the W same diameter as the collar portion and separated therefrom.

Fig. 4 is a'modification showin a section thru one of the metal heads with spacedportions forced from the stock to extend inwardly from the inner face of the head against which the body member abuts to be welded thereto. Fig. (fit; an end view of the construction illustrated in Fig. 4.

Fig. 6 is another modification showin portions of the stock ofthe head plate as orced inwardly from the inner face of the head at intervals about the head plate and against" which the body member ma abut to be connected by an electrical wel in operation.

, Fig. 7 1s a sectional view of the end portion of the rated.

' It is foundin precticein the construction, of large metal spools, diflicult to connect the body showing as being ser- I body of the spool direct to the flat surface of the head plate, owing to the fact that an electric current will not properly flow therethru to produce the best electrical welding effect and that in order to produce a butt welded 'joint with the maximum strength, it

is found to be of advanta e to turn a portion or portions of the stoc of the head inwardly and of a diameter corresponding to that of the body member and against which the end of the body member may abut'to facilitate the performing of an electrical welding operatlon and produce a butt welded joint with the maximum strength; and the following is a detailed description of the present embodiment of my invention and current will not properly flow to form a joint if the ends of the body abut against the flat face of the head, I have formed a central opening 12 thru the head and have turned a portion of the stock of the head inwardly forminga collar or flange portion 13 extending inwardly from the inner face of the head, both the inner and outer diameters of which are substantially the same as that of the body portion 14), against these collar portions 13, the ends of the body 10 are arranged to abut and by pro rly applying the I terminal of the butt wel ing machine to the surfaces adjacent'the joint to be welded, I am enabled to perform a butt welding operation in a simple and effective way which will produce a jolnt 14 of maximum strength.-

In some instances, instead of forming theopening thru the head of the same diameter as the lnner diameter of the'body member, may, as illustrated in Fi 4, provide a smaller opening 15 thru the sad 16 and cut and swage portions of the stock as at 17, at

close intervals about the head, to extend inthe ends of the bod wardly and a ainst whichthe end 18 of the barrel or-bo y 19 may abut to be welded thereto. I have also shown another modification, Fig. 6, wherein spaced inwardly projecting portions 20 may be formed on the inner face of the head plate 21 without piercing the head plate and against which the end 22 of the body 23 may abut to be welded to the head plate.

My improved construction of metal spool wherein inwardly-extending portions of the head plate are provided and against which abut to be electrically welded thereto ro uces a very strong and durable spool w1th a welded joint of maximum strength.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege ofresorting to all the mechanical changes to which the device is susceptible, the

invention being defined and limited only by the terms of the appended claims. I claim:

1. A spool comprising a body portion with a head member at each end, each of said head membershaving an i tegral portion extending inwardly from th plane of-its inner face, the ends of the body abutting against said inwardly-extending portions and electrically welded thereto.

1 2. A spoolcomprising a body portion with I a head member at each end, each of said head members having a central opening with a portion of the stock at the edge of the opening turned inwardly forming a collar portion on the inner face of the head of a diameter corresponding to that of the body, the ends of thebody abutting against said collar portions and being electrically welded thereto.

3. A spool having a body portion with head members at each end thereof, the len h of the body beingless than the distance etween its heads and portions of the heads ex tending inwardl to meet and abut against the ends of the ody and being electrically Welded thereto.

4. A spool comprising a body member with a head member at each'end thereof, the len th of the body member being less than the distance between the head members, portions of said head members projecting inwardly to meet and abut against the ends of the body member, the abutting edges of one of said members being serrated and the two being electrically butt welded together.

In testimony whereof I afiix by signature.

FRANK MOSSBERG. 

